109018 has 16 divisors (see below), whose sum is σ = 201600. Its totient is φ = 43056.

The previous prime is 109013. The next prime is 109037. The reversal of 109018 is 810901.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 108986 and 109004.

It is not an unprimeable number, because it can be changed into a prime (109013) by changing a digit.

109018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 481.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2¹⁰⁹⁰¹⁸ is an apocalyptic number.

109018 is a deficient number, since it is larger than the sum of its proper divisors (92582).

109018 is a wasteful number, since it uses less digits than its factorization.

109018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 109018 is about 330.1787394730. The cubic root of 109018 is about 47.7711911277.

Adding to 109018 its reverse (810901), we get a palindrome (919919).

The spelling of 109018 in words is "one hundred nine thousand, eighteen".